Reversing-valve.



PATENTED MAR. 28, 1905. J. A. HERRIGK. RBVERSING VALVE.-

LON FILED JULY 5,1904. "J

APPLIUAT 0 4 SHEETS-SHEBT 1.

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J. A. HERRIGK REVERSING VALVE.

APPLICATION FILED JULY 5,1904.

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w/ THESSES PATENTED MAR. 28, 1905.

J. A. HERRIOK. REVERSING VALVE.

APPLIOATION FILED JULY 5,1904.

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WITNESSES:

A TTOHNEY.

PATENTED MAR. 28, 1905.

J. A. HERRIGK.

' REVBRSING VALVE.

APPLICATION FILED JULY 5,1904.

4 SHEETS-SHEET 41 IN VENTOR BY 0L... b w

ATTURNEY.

Patented March 28, 1905.

PATENT OFFICE.

JAMES A. HERRICK, OF PHILADELPHIA, PENNSYLVANIA.

REVERSlNG-VALVE.

SPECIFICATION forming part of Letters Patent No. '786,( )33, dated March28, 1905.

Application filed 11 5 5, 1904.. Serial No. 215,452.

To (LZZ whom, it may concern:

Be itknown that I, J AMES A. HERRICK, a citi- Zen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain Improvementsin Reversing-Valves, ofwhich the following is a specification.

My invention is designed, primarily, for handling the heated products ofcombustion escaping from a continuous furnace and the air to be heatedfor use therein, the valve passing the flame and waste products from thefurnace to the regenerator to be heated thereby and the heated air fromthe other regenerator to the hot-air flue leading to the furnace. Insuch operations,owing to the high temperature to which valves aresubjected when constantly exposed to the intense heat of thefurnacegases directly entering them, great difliculty has beenexperienced from burning out, warping, sticking, and leaking in thevalve mechanisms commonly used; and it is the object of the presentinvention to provide means for overcoming these defects and tofacilitate the operation of the valve.

The nature and characteristic features of the improvements will morefully appear by reference to the following description, and theaccompanying drawings in illustration thereof, of which Figure 1representsavertical sectional view taken longitudinally through a valvemechanism and flues connected therewith in embodiment of my invention,the view being taken on the line 1 1 of Fig. 2. Fig. 2 represents ahorizontal sectional view of the same, taken on the line 2 2 of Fig. 1.Fig. 3 represents a top plan view of the valve mechanism. Fig.

4 represents a vertical sectional view taken on the line 4 4 of Figs. 2and 3, and Fig. 5 represents a vertical sectional view taken on the line5 5 of Figs. 2 and 3.

As shown in the drawings, the foundation 1 has anchored thereto acylinder 2, which acts as a base for and contains the column 3, movableas a piston in the cylinder. The top of the column has fitted thereonthe socket 1 of a frame 5, the frame being revolubly supported on theball-bearings 6, rolling on the top of the column. The frame carries thehangers 7, fixed to the valve-drums 8 and 9, having passes with the portends 10 11 and 12 13. By the revolution of the frame and drums therespective'port ends thereof may be brought into registration with theportend 1 1 of the flue 15, leading from the furnacechamber 16, the portend 17 of the regenerator-flue 18, parallel to and communicating withthe regenerator-flue 18, the port end 19 of the regenerator-flue 20,parallel to and communicating with the regenerator-flue 20, and the portend 21 of the hot-air flue 22, leading to the furnace-chamber. Each ofthe port ends of the drums has vertically movable thereon a cylindricalapron 23, provided with a collar 24:. Each apron is adapted for dippinginto the channel 25, surrounding the port end of each of the flues, thechannels being connected by the pipes 25 and filled with water to formseals between the drum and flue ports.

The respective aprons are supported by rods 26, suspended from yokes 27,pivotally connected to levers 28, having the fulcrums 29. The leversextend radially from a central coupling 30, to which they are pivoted.The coupling has a link 31, pivoted thereto and to a lever 32, havingthe fulcrum 33. The lever 32 is elevated and depresses the levers 28 tolift the aprons 23 out of the channels 25 when it is desired to revolvethe drums, the aprons being lowered into the channels when the drumshave been revolved into the position causing their ports to registerwith the corresponding flue-ports.

When through any cause it is desired tolift the drums through stickingof the aprons for access to the flues or passes or to make repairs, thecylinder 2 may be charged with water through the port 3 1, lifting thepiston 3, with the frame or spider 5, and drums 8, carried thereby.

It will now be understood that with the mechanism in the position shownthe flame and heated products of combustion flowing constantly from thefurnace chamber 16 through the flue 15 pass through the drum 8 to theregenerator-flue 18 and thence through the regenerator-flue 18 to thestack, while the air flowing through the regenerator-flues 20 and 20 ispassed by the drum 9 into the hotair flue 22, leading to thefurnace-chamber. \Vhen it is desired to-reverse, the aprons 23 arelifted from the channels 25, the valve is swung round, and the apronslowered into the channels, with the drum 9 connecting the flue 15 withthe flue 20 and the drum 8 connecting the flue 18 with the flue 22.

I have found that my passes or drums of circular cross-section havemarked advantages over passes of rectangular cross-section. The drums ofcircular cross-section readily retain the insulating-linings, whichcannot be retained in passes of rectangular cross-section, thelining-joints in the latter construction separating. The use ofseparated drums, as in the present invention, permits a free circulationof air wholly around each pass to keep the walls cool and prevents thecommunication which takes place between passes that aremerely separatedby a wall constantly subject to intense heat from one or the other ofthe passes and destroyed in ashort time as a consequence thereof. Theconstant high temperature to which a division-wall is subjected whichseparates passes of rectangular cross-section causes it to open at itsjoints and permits leakage between the passes.

I claim 1. The combination of a plurality of flues each having a port,with a rotary valve having passes with independent walls exposed to thefree circulation of air entirely around said passes, said passes beingadapted for registration in alternation with the corresponding ports ofsaid flues, substantially as specified.

2. The combination of a plurality of flues each havinga port,awater-channelsurrounding each of said ports, a pair of rotary passescircular in cross-section provided with independent walls each having apair of ports adapted to register with a pair of said flueports, andaprons surrounding said rotary passes and dipping into saidwater-channels, substantially as specified.

3. The combination of a plurality of flues each having a port, awater-channel surrounding each of said ports, a plurality of rotarypasses each having a pair of ports adapted to register with saidflueports, aprons surrounding said rotary passes and dipping into saidwater-channels, and means for elevating and lowering said apronsindependently of said passes, substantially as specified.

4. The combination of a plurality of flues having ports, with a pair ofseparated drums having ports adapted for registration with alternateports of said flues, a column, and means for permitting said drums torotate independently of the movement of said column, substantially asspecified.

5. The combination of a plurality of flues having ports, with a pair ofseparated drums exposed to the free circulation of air entirely aroundthem, said drums having ports adapted for registration with alternateports of said flues, a column, and a frame rotatably supported on saidcolumn and supporting said drums, substantially as specified.

6. The combination of a plurality of flues having ports, with a pair ofrevoluble drums having ports adapted for registration with alternateports of said flues,'means for rotatably supporting said drums, andsealing mechanism movable independently of the movement of said drums,substantially as specified.

7. The combination of a plurality of flues having ports, channelssurrounding said ports, a pair of rotary drums having ports adapted forregistration with said flue-ports, aprons sleeved on said drums andregistering with said channels, and lever mechanism connected with saidaprons for operating them, substantially as specified.

In testimony whereof I have hereunto set my hand, this 30th day of June,1904:, in the presence of the subscribing witnesses.

JAMES A. HERRICK.

In presence of THOMAS S. GA'rus, U'ILEY E. CRANE, Jr.

